
public class SchoolTest {
    public static void main(String[] args) {
        School s1=new School("yctu",8888);
        School s2=new School("yctuu",88888);
        School s3=new School("yctuuu",888888);
        // s1.setLibrary("public library");
        School.library="public library";
        s1.show();
        s2.show();
        s3.show();
    }
}
